<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>购物车</title>
	<%--静态包含，base标签，css样式，jQuery文件--%>
	<%@include file="/pages/common/head.jsp"%>
	<script type="text/javascript">
		$(function (){
			//给【删除】绑定单击事件
			$("a.deleteStyle").click(function (){
				return confirm("你确定要删除【"+$(this).parent().parent().find("td:first").text()+"】吗");
			});

			//给【清空购物车】绑定单击事件
			$("#clearCart").click(function (){
				return confirm("你确定要清空购物车吗？");
			});

			//修改数量
			$(".updateCount").change(function (){
				//获取商品名称
				var name = $(this).parent().parent().find("td:first").text();
				//获取商品数量
				var count = this.value;
				var id = $(this).attr("bookId");
				if(confirm("你确定要将【"+name+"】的数量改为"+count+"吗？")){
					//发起请求给服务器保存修改
					location.href = "http://localhost:8080/Book/CartServlet?action=updateCount&id="+id+"&count="+count;
				}else{
					//defaultValue是表单项Dom对象的属性，表示默认的值
					this.value = this.defaultValue;
				}
			});
		});
	</script>
</head>
<body>
	
	<div id="header">
			<img class="logo_img" alt="" src="static/img/logo.gif" >
			<span class="wel_word">购物车</span>
			<%--静态包含，登陆成功的页面--%>
			<%@include file="/pages/common/login_sucess_menu.jsp"%>
	</div>
	
	<div id="main">

		<table>
			<tr>
				<td>商品名称</td>
				<td>数量</td>
				<td>单价</td>
				<td>金额</td>
				<td>操作</td>
			</tr>
			<c:if test="${empty sessionScope.cart.items}">
				<%--如果购物车为空--%>
				<tr>
					<td colspan="5"><a href="index.jsp">亲，当前购物车为空</a></td>
				</tr>
			</c:if>
			<c:if test="${not empty sessionScope.cart.items}">
				<%--如果购物车非空--%>
				<c:forEach items="${sessionScope.cart.items}" var="entry">
				<tr>
					<td>${entry.value.name}</td>
					<td><input class="updateCount"
							   style="width: 30px" type="text" bookId="${entry.value.id}"
							   value="${entry.value.count}"></td>
					<td>${entry.value.price}</td>
					<td>${entry.value.totalPrice}</td>
					<td ><a class="deleteStyle" href="CartServlet?action=deleteItem&id=${entry.value.id}">删除</a></td>
				</tr>
				</c:forEach>
			</c:if>

		</table>
		<%--如果购物车非空才输出页面内容--%>
		<c:if test="${not empty sessionScope.cart.items}">
			<div class="cart_info">
				<span class="cart_span">购物车中共有<span class="b_count">${sessionScope.cart.totalCount}</span>件商品</span>
				<span class="cart_span">总金额<span class="b_price">${sessionScope.cart.totalPrice}</span>元</span>
				<span class="cart_span"><a id="clearCart" href="CartServlet?action=clear">清空购物车</a></span>
				<span class="cart_span"><a href="OrderServlet?action=createOrder">去结账</a></span>
			</div>
		</c:if>

	</div>

	<%--静态包含页脚内容--%>
	<%@include file="/pages/common/footer.jsp" %>

</body>
</html>